not representing or imitating external reality or the objects of nature

Example:

a large abstract painting

source: wordnet30

4

dealing with a subject in the abstract without practical purpose or intention

Example:

abstract reasoningabstract science

source: wordnet30

noun

5

a concept or idea not associated with any specific instance

Example:

he loved her only in the abstract--not in person

source: wordnet30

6

a sketchy summary of the main points of an argument or theory

source: wordnet30

7

That which comprises or concentrates in itself the essential qualities of a larger thing or of several things. Specifically: A summary or an epitome, as of a treatise or book, or of a statement; a brief.

source: webster1913

verb

8

consider a concept without thinking of a specific example; consider abstractly or theoretically